<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<a href="download?filename=abc.pdf">重要通知</a>
<a href="download?filename=c.pdf">重要通知</a>
<input type="text" />  //getParameter("user")
</body>
</html>